Creep-resistant, cobalt-containing alloys for high temperature, liquid-salt heat exchanger systems

Holcomb, David E.; Muralidharan, Govindarajan; Wilson, Dane F.

Title: Creep-resistant, cobalt-containing alloys for high temperature, liquid-salt heat exchanger systems

Patent · Tue Jul 10 00:00:00 EDT 2018

OSTI ID:1462963

Holcomb, David E.; Muralidharan, Govindarajan; Wilson, Dane F.

An essentially Fe-free alloy consists essentially of, in terms of weight percent: 4 to 11 Co, 6.5 to 7.5 Cr, 0 to 0.15 Al, 0.5 to 0.85 Mn, 11 to 20 Mo, 1 to 3.5 Ta, 0.05 to 9 W, 0.03 to 0.08 C, 0 to 0.001 B, 0.0005 to 0.005 N, balance Ni, the alloy being characterized by, at 850.degree. C., a yield strength of at least 25 Ksi, a tensile strength of at least 45 Ksi, a creep rupture life at 12 Ksi of at least 10 hours, and a corrosion rate, expressed in weight loss [g/(cm.sup.2sec)]10.sup.-11 during a 1000 hour immersion in liquid FLiNaK at 850.degree. C., in the range of 5 to 20.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-00OR22725

Assignee:: UT-Battelle, LLC (Oak Ridge, TN)

Patent Number(s):: 10,017,842

Application Number:: 13/958,672

OSTI ID:: 1462963

Resource Relation:: Patent File Date: 2013 Aug 05

Country of Publication:: United States

Language:: English

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